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Commit | Line | Data |
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1da177e4 | 1 | /* |
ba180fd4 | 2 | * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) |
1da177e4 LT |
3 | * Licensed under the GPL |
4 | */ | |
5 | ||
6 | #ifndef __UM_PROCESSOR_GENERIC_H | |
7 | #define __UM_PROCESSOR_GENERIC_H | |
8 | ||
9 | struct pt_regs; | |
10 | ||
11 | struct task_struct; | |
12 | ||
1da177e4 | 13 | #include "asm/ptrace.h" |
fad1c45c | 14 | #include "registers.h" |
3c917350 | 15 | #include "sysdep/archsetjmp.h" |
1da177e4 LT |
16 | |
17 | struct mm_struct; | |
18 | ||
19 | struct thread_struct { | |
ba180fd4 JD |
20 | struct task_struct *saved_task; |
21 | /* | |
22 | * This flag is set to 1 before calling do_fork (and analyzed in | |
acef2e55 PBG |
23 | * copy_thread) to mark that we are begin called from userspace (fork / |
24 | * vfork / clone), and reset to 0 after. It is left to 0 when called | |
ba180fd4 JD |
25 | * from kernelspace (i.e. kernel_thread() or fork_idle(), |
26 | * as of 2.6.11). | |
27 | */ | |
1da177e4 LT |
28 | int forking; |
29 | int nsyscalls; | |
30 | struct pt_regs regs; | |
1da177e4 LT |
31 | int singlestep_syscall; |
32 | void *fault_addr; | |
fab95c55 | 33 | jmp_buf *fault_catcher; |
1da177e4 LT |
34 | struct task_struct *prev_sched; |
35 | unsigned long temp_stack; | |
fab95c55 | 36 | jmp_buf *exec_buf; |
1da177e4 | 37 | struct arch_thread arch; |
77bf4400 JD |
38 | jmp_buf switch_buf; |
39 | int mm_count; | |
1da177e4 LT |
40 | struct { |
41 | int op; | |
42 | union { | |
43 | struct { | |
44 | int pid; | |
45 | } fork, exec; | |
46 | struct { | |
47 | int (*proc)(void *); | |
48 | void *arg; | |
49 | } thread; | |
50 | struct { | |
51 | void (*proc)(void *); | |
52 | void *arg; | |
53 | } cb; | |
54 | } u; | |
55 | } request; | |
56 | }; | |
57 | ||
58 | #define INIT_THREAD \ | |
59 | { \ | |
60 | .forking = 0, \ | |
61 | .nsyscalls = 0, \ | |
ba180fd4 | 62 | .regs = EMPTY_REGS, \ |
1da177e4 LT |
63 | .fault_addr = NULL, \ |
64 | .prev_sched = NULL, \ | |
65 | .temp_stack = 0, \ | |
66 | .exec_buf = NULL, \ | |
67 | .arch = INIT_ARCH_THREAD, \ | |
68 | .request = { 0 } \ | |
69 | } | |
70 | ||
71 | typedef struct { | |
72 | unsigned long seg; | |
73 | } mm_segment_t; | |
74 | ||
75 | extern struct task_struct *alloc_task_struct(void); | |
76 | ||
77bf4400 JD |
77 | static inline void release_thread(struct task_struct *task) |
78 | { | |
79 | } | |
80 | ||
1da177e4 | 81 | extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags); |
c16993d9 PBG |
82 | |
83 | static inline void prepare_to_copy(struct task_struct *tsk) | |
84 | { | |
85 | } | |
86 | ||
1da177e4 LT |
87 | |
88 | extern unsigned long thread_saved_pc(struct task_struct *t); | |
89 | ||
90 | static inline void mm_copy_segments(struct mm_struct *from_mm, | |
91 | struct mm_struct *new_mm) | |
92 | { | |
93 | } | |
94 | ||
95 | #define init_stack (init_thread_union.stack) | |
96 | ||
97 | /* | |
98 | * User space process size: 3GB (default). | |
99 | */ | |
100 | extern unsigned long task_size; | |
101 | ||
102 | #define TASK_SIZE (task_size) | |
103 | ||
104 | /* This decides where the kernel will search for a free chunk of vm | |
105 | * space during mmap's. | |
106 | */ | |
107 | #define TASK_UNMAPPED_BASE (0x40000000) | |
108 | ||
109 | extern void start_thread(struct pt_regs *regs, unsigned long entry, | |
110 | unsigned long stack); | |
111 | ||
112 | struct cpuinfo_um { | |
113 | unsigned long loops_per_jiffy; | |
114 | int ipi_pipe[2]; | |
115 | }; | |
116 | ||
117 | extern struct cpuinfo_um boot_cpu_data; | |
118 | ||
119 | #define my_cpu_data cpu_data[smp_processor_id()] | |
120 | ||
121 | #ifdef CONFIG_SMP | |
122 | extern struct cpuinfo_um cpu_data[]; | |
123 | #define current_cpu_data cpu_data[smp_processor_id()] | |
124 | #else | |
125 | #define cpu_data (&boot_cpu_data) | |
126 | #define current_cpu_data boot_cpu_data | |
127 | #endif | |
128 | ||
1da177e4 | 129 | |
77bf4400 | 130 | #define KSTK_REG(tsk, reg) get_thread_reg(reg, &tsk->thread.switch_buf) |
fad1c45c | 131 | #define get_wchan(p) (0) |
1da177e4 | 132 | |
fad1c45c | 133 | #endif |